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boulardii along with routine eye drops showed significant improvement in DED symptoms compared to the control group, which received only eye drops ( Lactobacillus , Bifidobacterium , and Streptococcus with NutriKaneD confirmed its effectiveness in increasing tear secretion and reducing discomfort (Tavakoli et al., 2022)

Notably, research by Chen et al

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For example, intravenous injection of NE-4C neural stem cells can reduce the expression of L-selectin, decrease the inflammatory response at the site of SCI, and promote the survival and functional reconnection of motor neurons (Bellk et al., 2025)

Extensive literature outlines positive health and clinical outcomes associated with fermented foods, yet most data are associative and lack longitudinal studies